<template>
   <el-main>
    <!-- 新增按钮 -->
    <el-button type="success" icon="el-icon-plus" @click="openAddWindow">新增</el-button>
    
    <!-- 数据表格 -->
    <el-table
        style="margin-top: 10px"
        :height="tableHeight"
        :data="menuList"
        row-key="id"
        
        :tree-props="{ children: 'children' }"
        :border="true"
        stripe
    >
        <el-table-column prop="label" label="菜单名称"></el-table-column>
        <el-table-column prop="type" label="菜单类型" align="center">
            <template slot-scope="scope">
                <el-tag v-if="scope.row.type == '0'" size="normal">目录</el-tag>
                <el-tag type="success" v-else-if="scope.row.type == '1'" size="normal">菜单</el-tag>
                <el-tag type="warning" v-else-if="scope.row.type == '2'" size="normal">按钮</el-tag>
            </template>
        </el-table-column>
        <el-table-column prop="icon" label="图标" align="center">
            <template slot-scope="scope">
                <i :class="scope.row.icon" v-if="scope.row.icon.includes('el-icon')" ></i>
                <svg-icon v-else :icon-class="scope.row.icon"></svg-icon>
            </template>
        </el-table-column>
        <el-table-column prop="name" label="路由名称"></el-table-column>
        <el-table-column prop="path" label="路由地址"></el-table-column>
        <el-table-column prop="url" label="组件路径"></el-table-column>
        <el-table-column align="center" label="操作">
            <template slot-scope="scope">
                <el-button
                    type="primary"
                    icon="el-icon-edit"
                    size="small"
                    @click="handleEdit(scope.row)"
                    >编辑
                </el-button>
                <el-button
                    type="danger"
                    size="small"
                    icon="el-icon-delete"
                    @click="handleDelete(scope.row)"
                    >删除
                </el-button>
            </template>
    </el-table-column>

    
    </el-table>
    <!-- 新增或编辑弹框 -->
    <system-dialog
        :title="menuDialog.title"
        :width="menuDialog.width"
        :height="menuDialog.height"
        :visible="menuDialog.visible"
        @onClose="onClose"
        @onConfirm="onConfirm"
    >
        <div slot="content">
            <el-form
                :model="menu"
                ref="menuForm"
                :rules="rules"
                label-width="80px"
                :inline="true"
                size="small"
            >
                <el-row>
                    <el-col :span="24">
                        <el-form-item prop="type" label="菜单类型">
                            <el-radio-group v-model="menu.type">
                            <el-radio :label="0">目录</el-radio>
                            <el-radio :label="1">菜单</el-radio>
                            <el-radio :label="2">按钮</el-radio>
                            </el-radio-group>
                        </el-form-item>
                    </el-col>
                </el-row>
                <el-form-item prop="parentName" size="small" label="所属菜单">
                    <el-input
                        @click.native="selectParentMenu"
                        v-model="menu.parentName"
                        :readonly="true"
                    ></el-input>
                </el-form-item>
                <el-form-item prop="label" size="small" label="菜单名称">
                    <el-input v-model="menu.label"></el-input>
                </el-form-item>
                <el-form-item size="small" label="菜单图标">
                    <my-icon @selecticon="setIcon" ref="child"/>
                </el-form-item>
                <el-form-item
                    prop="name"
                    v-if="menu.type == 1"
                    size="small"
                    label="路由名称"
                    >
                    <el-input v-model="menu.name"></el-input>
                </el-form-item>
                <el-form-item
                    prop="path"
                    v-if="menu.type != 2"
                    size="small"
                    label="路由地址"
                    >
                    <el-input v-model="menu.path"></el-input>
                </el-form-item>
                <el-form-item
                    prop="url"
                    v-if="menu.type == 1"
                    size="small"
                    label="组件路径"
                    >
                    <el-input v-model="menu.url"></el-input>
                </el-form-item>
                <el-form-item prop="code" size="small" label="权限字段">
                    <el-input v-model="menu.code"></el-input>
                </el-form-item>
                <el-form-item size="small" label="菜单序号">
                    <el-input v-model="menu.orderNum"></el-input>
                </el-form-item>

            </el-form>
        </div>
    </system-dialog>
    <!-- 选择所属菜单弹框 -->
    <system-dialog
        :title="parentDialog.title"
        :width="parentDialog.width"
        :height="parentDialog.height"
        :visible="parentDialog.visible"
        @onClose="onParentClose"
        @onConfirm="onParentConfirm"
    >
        <div slot="content">
            <el-tree
                style="font-size: 14px"
                ref="parentTree"
                :data="parentMenuList"
                node-key="id"
                :props="defaultProps"
                empty-text="暂无数据"
                :show-checkbox="false"
                default-expand-all
                :highlight-current="true"
                :expand-on-click-node="false"
                @node-click="handleNodeClick"
            >
                <div class="customer-tree-node" slot-scope="{ node, data }">
                <!-- 长度为0说明没有下级 -->
                    <span v-if="data.children.length == 0">
                        <i class="el-icon-document" style="color: #8c8c8c; font-size: 18px"/>
                    </span>
                    <span v-else @click.stop="openBtn(data)">
                        <svg-icon v-if="data.open" icon-class="add-s"/>
                        <svg-icon v-else icon-class="sub-s"/>
                    </span>
                    <span style="margin-left: 3px">{{ node.label }}</span>
                </div>
            </el-tree>
        </div>
    </system-dialog>

   </el-main>

</template>

<script>
//导入menu.js脚本代码
import menuApi from '@/api/menu';
//导入对话框组件
import SystemDialog from '@/components/system/SystemDialog.vue';
//导入自定义图标组件
import MyIcon from '@/components/system/MyIcon.vue'

export default {
    name:"menuList",
    //注册组件
    components:{
        SystemDialog,
        MyIcon
    },
    data(){
        return{
            menuList: [], //菜单列表
            tableHeight: 0 ,//表格高度
            //新增或编辑弹框属性
            menuDialog: {
                title: "",
                width: 630,
                height: 270,
                visible: false,
            },
            //上级菜单弹框属性
            parentDialog: {
                title: '选择所属菜单',
                width: 280,
                height: 450,
                visible: false
            },
            //树属性定义
            defaultProps: {
                children: 'children',
                label: 'label'
            },
            parentMenuList: [], //所属菜单列表
            //菜单属性
            menu: {
                id: "",
                type: "",
                parentId: "",
                parentName: "",
                label: "",
                icon: "",
                name: "",
                path: "",
                url: "",
                code: "",
                orderNum: "",
            },
            rules: {
                type: [{ required: true, trigger: "change", message: "请选择菜单类型" }],
                parentName: [{ required: true, trigger: "change", message: "请选择所属菜单"}],
                label: [{ required: true, trigger: "blur", message: "请输入菜单名称" }],
                name: [{ required: true, trigger: "blur", message: "请输入路由名称" }],
                path: [{ required: true, trigger: "blur", message: "请输入路由路径" }],
                url: [{ required: true, trigger: "blur", message: "请输入组件路径" }],
                code: [{ required: true, trigger: "blur", message: "请输入权限字段" }],
            },

        }

    },
    //初始化时调用
    created(){
        this.search();

    },
    methods:{
        /**
        * 查询菜单列表
        */
        async search() {
            //发送查询请求
            let res = await menuApi.getMenuList();
            //判断是否成功
            if(res.success){
                //赋值
                this.menuList = res.data;
            }
        },
        /**
        * 打开添加窗口
        */
        openAddWindow() {
            this.$resetForm("menuForm", this.menu); //清空表单数据
            this.menuDialog.title = "新增菜单"; //设置窗口标题
            this.menuDialog.visible = true; //显示窗口
            //清空菜单图标选择器
            this.$nextTick(() => {
                this.$refs["child"].userChooseIcon = "";//清空菜单图标
            })

        },
        /**
        * 添加和修改菜单窗口关闭事件
        */
        onClose() {
            this.menuDialog.visible = false; //关闭窗口
        },
        /**
        * 添加和修改菜单窗口确认事件
        */
        onConfirm() {
            //表单验证
            this.$refs.menuForm.validate(async (valid) => {
                if (valid) {
                    let res = null;
                    //判断菜单ID是否为空
                    if (this.menu.id === "") {
                        //发送添加请求
                        res = await menuApi.addMenu(this.menu);
                    } else {
                        //发送修改请求
                        res = await menuApi.updateMenu(this.menu);
                    }
                    //判断是否成功
                    if (res.success) {
                        this.$message.success(res.message);
                        //刷新
                        this.search();
                        //关闭窗口
                        this.menuDialog.visible = false;
                    } else {
                        this.$message.error(res.message);
                    }
                }
            })

        },
        /**
        * 选择所属菜单
        */
        async selectParentMenu() {
            //显示窗口
            this.parentDialog.visible = true;
            //发送查询请求
            let res = await menuApi.getParentMenuList();
            //判断是否成功
            if (res.success) {
                //赋值
                this.parentMenuList = res.data;
            }
        },
        /**
        * 选择所属菜单取消事件
        */
        onParentClose() {
            this.parentDialog.visible = false //关闭窗口
        },
        /**
        * 选择所属菜单确认事件
        */
        onParentConfirm() {
            this.parentDialog.visible = false //关闭窗口
        },
        /**
        * 切换图标
        * @param data
        */
        openBtn(data) {
            data.open = !data.open
            this.$refs.parentTree.store.nodesMap[data.id].expanded = !data.open
        },
        /**
        * 所属菜单节点点击事件
        */
        handleNodeClick(data) {
            console.log(data);
            //所属父级菜单ID
            this.menu.parentId = data.id;
            //所属父级菜单名称
            this.menu.parentName = data.label;
        },

        //给icon绑定的点击事件
        setIcon(icon) {
            this.menu.icon = icon;
        },

        /**
        * 编辑菜单
        * @param row
        */
        editMenu(row){
        },

        /**
         * 打开编辑菜单窗口
         */
        handleEdit(row){
            //把当前要编辑的数据复制到数据域，给表单回显
            this.$objCopy(row, this.menu);
            this.menuDialog.title = "编辑菜单"; //设置窗口标题
            this.menuDialog.visible = true; //显示窗口
            //清空菜单图标选择器
            this.$nextTick(() => {
                this.$refs["child"].userChooseIcon = row.icon;//回显菜单图标
            })
        },
        /**
        * 删除菜单
        * @param row
        */
        async handleDelete(row) {
            //判断是否存在子菜单
            let result = await menuApi.checkPermission({ id: row.id });
            //判断是否可以删除
            if (!result.success) {
                //提示不能删除
                this.$message.warning(result.message);
            } else {
                //确认是否删除
                let confirm =await this.$myconfirm("确定要删除该数据吗?");
                if (confirm) {
                    //发送删除请求
                    let res = await menuApi.deleteById({ id: row.id });
                    //判断是否成功
                    if (res.success) {
                        //成功提示
                        this.$message.success(res.message);
                        //刷新
                        this.search();
                    } else {
                        //失败提示
                        this.$message.error(res.message);
                    }
                }
            }
        }
    },
    mounted(){
        this.$nextTick(() => {
            this.tableHeight = window.innerHeight - 180
        })
    }
}
</script>

<style lang="scss" scoped>
.iconList {
    width: 400px;
    height: 300px;
    overflow-y: scroll;
    overflow-x: hidden;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    i {
        display: inline-block;
        width: 60px;
        height: 45px;
        color: #000000;
        font-size: 20px;
        border: 1px solid #e6e6e6;
        border-radius: 4px;
        cursor: pointer;
        text-align: center;
        line-height: 45px;
        margin: 5px;
        &:hover {
            color: orange;
            border-color:orange;
        }
    }
}
.chooseIcons{
    width: 175px;
    background-color: #FFFFFF;
    background-image: none;
    border-radius: 4px;
    border: 1px solid #DCDFE6;
    box-sizing: border-box;
    color: #606266;
    display: inline-block;
    font-size: inherit;
    height: 33px;
    line-height: 25px;
    outline: none;
    padding: 0 15px;
    transition: border-color 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
}
</style>